Russia and Ukraine each launched more than 100 attack drones overnight, most of which were intercepted, the countries' militaries said.

Vuhledar had been under assault for almost three years. Russian forces entered it after a furious battle, and Ukraine ordered troops to retreat.

KYIV (Reuters) -Russian drones overnight attacked port infrastructure in Ukraine's southern Odesa region, damaging a grain facility and buildings at a border crossing to Romania, as well as cutting power to thousands in the northern Sumy region, officials said.

There is no confirmation that Chinese nationals are among the thousands of foreigners who have fought for Russia in the war.